Home / 15,470.30-21,347.20-8,664.68

Finding the Fourth Proportional to 15,470.30, 21,347.20 and 8,664.68

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Solution

The fourth proportional to 15,470.30, 21,347.20 and 8,664.68 is: 11,956.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,470.30 : 21,347.20 = 8,664.68 : x
  2. Step 2: Convert to fraction form
    15,470.30/21,347.20 = 8,664.68/x
  3. Step 3: Cross multiply
    15,470.30x = 21,347.20 × 8,664.68
  4. Step 4: Simplify right side
    15,470.30x = 184,966,656.90
  5. Step 5: Solve for x
    x = 184,966,656.90/15,470.30
  6. Step 6: Final answer
    x = 11,956.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.